摩擦电效应
纳米发生器
材料科学
纳米技术
湿度
生物医学工程
复合材料
医学
气象学
压电
物理
作者
Wenjian Li,Liqiang Lu,Ajay Giri Prakash Kottapalli,Yutao Pei
出处
期刊:Nano Energy
[Elsevier]
日期:2022-05-01
卷期号:95: 107018-107018
被引量:49
标识
DOI:10.1016/j.nanoen.2022.107018
摘要
Regular exercise plays an important role in remedying body suboptimal health status and releasing daily stress. Herein, we proposed a bioinspired sweat-resistant wearable triboelectric nanogenearator (BSRW-TENG) for movement monitoring during exercise. The BSRW-TENG consists of two superhydrophobic and self-cleaning triboelectric layers (elastic resin and polydimethylsiloxane (PDMS)), which featured the hierarchical micro/nanostructures replicated from lotus leaf. The bioinspired micro/nanostructures not only realized a 2-fold output increase of the BSRW-TENG, but also offered the BSRW-TENG with excellent contamination and humidity resistant properties that constitute the sweat-resistance. After saline (0.9%) dripped on and evaporated, the output of the BSRW-TENG remained the same while that of the flat-TENG decreased by 41% due to salt contamination on the triboelectric surfaces. Besides, the BSRW-TENG demonstrated excellent humidity-resistance with only 11% output reduction as the relative humidity increased from 10% to 80%, while the flat-TENG decreased by 54%. The sweat-resistant ability was further verified under extreme harsh conditions including complete surface contamination and ultra-humid water spraying. Finally, various exercise movements including dumbbell biceps curl, leg curl and running were successfully monitored by the BSRW-TENG with stable performance before and after sweating. The proposed BSRW-TENG has huge potential in low-cost personal exercise monitoring and athletes’ training analysis.
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